EP 1741181 A2 20070110 - TRAVELLING WAVE AMPLIFIER
Title (en)
TRAVELLING WAVE AMPLIFIER
Title (de)
AUSBREITUNGSWELLEN-VERSTÄRKER
Title (fr)
AMPLIFICATEUR A ONDES PROGRESSIVES
Publication
Application
Priority
- IB 2005051264 W 20050419
- EP 04300215 A 20040421
- EP 05718753 A 20050419
Abstract (en)
[origin: WO2005104359A2] A travelling wave amplifier has two inductive transmission lines (12,14) with a plurality of amplifier devices (10) connected between them. At least one of the transmission lines (14) further comprises a plurality of delay elements (50), each delay element being provided in series between a respective pair of inductive elements. The delay elements enable the pulse propagation speeds in the two transmission lines to be matched while leaving freedom in the selection of impedance values to provide input and output impedance matching of the amplifier. In this way, even when the individual amplifier devices (10) have unequal input and output impedances, the amplifier can be configured to provide matched input and output impedances as well as matched propagation speeds.
IPC 8 full level
H03F 3/58 (2006.01)
CPC (source: EP US)
H03F 3/58 (2013.01 - EP US); H03F 3/607 (2013.01 - EP US); H03F 2200/255 (2013.01 - EP US); H03F 2200/423 (2013.01 - EP US)
Citation (search report)
See references of WO 2005104359A2
Citation (examination)
US 5485118 A 19960116 - CHICK RICHARD W [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR LV MK YU
DOCDB simple family (publication)
WO 2005104359 A2 20051103; WO 2005104359 A3 20060316; WO 2005104359 A8 20060601; WO 2005104359 B1 20060629; CN 1998135 A 20070711; EP 1741181 A2 20070110; JP 2007534257 A 20071122; US 2009219087 A1 20090903
DOCDB simple family (application)
IB 2005051264 W 20050419; CN 200580012609 A 20050419; EP 05718753 A 20050419; JP 2007509036 A 20050419; US 56803405 A 20050419